Alert archive / Texas / Mesoscale Discussions in 2003

Mesoscale Discussion 153

February 24, 200317 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at Feb 24, 2003, 5:13 PM CST for 17 counties in Texas. It was in force for 3 hr.

The area

The outline as issued.

The facts

Issued
Feb 24, 2003, 5:13 PM CST (23:13 UTC)
Expired
Feb 24, 2003, 8:15 PM CST
In force
3 hr
Issued by
the Storm Prediction Center

Counties Bastrop County, TX, Bell County, TX, Bexar County, TX, Blanco County, TX, Burnet County, TX, Caldwell County, TX, Comal County, TX, Coryell County, TX, Falls County, TX, Guadalupe County, TX, Hays County, TX, Kendall County, TX, Llano County, TX, McLennan County, TX, Milam County, TX, Travis County, TX, Williamson County, TX

The nearest sounding before it

Fort Worth, TX (KFWD), launched 12:00Z, 11.2 hours before the alert went out and 252 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-pSkew-T log-p diagram, Fort Worth, TX at 12:00Z on 2003-02-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCLEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Fort Worth, TX at 12:00Z on 2003-02-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 165 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
666 m above ground
0-6 km bulk shear
56 kt
0-1 km storm-relative helicity
165 m²/s²
0-3 km storm-relative helicity
482 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

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SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Feb 24, 10:40 AM CSTMesoscale DiscussionSPCBell, Bosque, Bowie, Brown, Burnet, Callahan and 42 more4 hr

Nearby

Mesoscale Discussions in Texas, 2003Every mesoscale discussion in 2003

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive.